Water heater or boiler.



C. F. NEWPORT. WATER HEATER 0B BOILER. urmouxon rmsn MAY 15, m1.

Patented July 29, 1913.

INVENTOR G. F. NEWPORT. WATER HEATER 0B- BOILER.

urmonmn FILED MAY 15, 1911.

1,068,694. Patented July 29, 1913.

6 SHEETS-SHEET 2.

G. F. NEWPORT.

WATER HEATER OB BOILER.

uruounon rum) mus, 1911 1,068,694. Patented July 29, 1913.

6 SHEETS-SHEET 3.

W W v U. P. NEWPORT.

WATER HEATER 0B BOILER.

nruonmn FILED MAY 15, 1011.

Patented July 29, 1913,

6 SHEETS-4311B! 4.

0. F. NEWPORT.

WATER HEATER on BOILER.

APPLICATION FILED MAY 15 Patented July 29, 1913.

5 BHEETHHBBT 5.

wrmsssz 3 mvzu'ron Vzarieim w 01 2" PATENT OFFICE.

CHARLES E. NEWPORT, OF CHICAGO, ILLINOIS.

WATER HEATER OR BOILER.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed May 15, 1911. Serial No. 627,2 00.

u all whom it may concern:

Be itknown that I, Cuxnmzs F. Nnwron'r, a citizen of the United States,and a resident of Chicago, in the county of (ook and State of Illinois,have invented certain new and useful Improvements in \Vater Heaters orBoilers; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, and to the char-ac ters of reference marked thereon, whichform a part of this specification.

This invention relates to improvements in water heaters or steamboilers, more especially adapted to furnish not water or steam toheating systems of buildings. I

The invention relates more especially to improvements in the means forfeeding the fuel to the tire box of the heater or combustion chamber andto an improved arrangement for admitting air to the fire box to supportcombustion, and to other features of construction as will more fullyhereiuafter appear.

My improvements are shown as applied to a sectional water heater of thatkind wherein the water spaces of the heater are formed in cored out castmetal sections which are grouped and secured together with nippleconnections between the same. in the manncrot' the sectrons of a steamor hot water radiator to permit intercirculatom of water therethrough.and are so shaped thatv when brought together llues are formed throughwhich the hot gases of combustion pass from the lire box to the exittluc. ;\ll of the improvements are adapted to heaters of this type whilecertain of them may be well adapted to heaters of other types.

The invention consists in the matters hereinafter set forth and moreparticularly pointed out inthe appended claims. I

In the drawings, Figure. l is a front elevation of a water heaterembodying my invention. Fig. 2 is a rear elevation thereof. Fig. 3 is atransverse vertical section on line 3--l3 of Fig. 4. the same beingtaken in a plane between adjacent heater sections at. one side of saidlignrc and through one of the heater sections at the. other sidethereof. a longitudinal vertical section on the line 44 of Fig. 3. Fig.5 is a fragmentary central vertical section of the rear part of thehator pn the line 55 of Fig. 2. Fig. 6

t i 1 i l i l is a fragmentary horizontal section on the line t3-t5 ofFig. 3. Fig. T is a fragmentary vertical section on the. line 7-7 ofFig. (5. Fig. 8 is a fragmentary horizmital section on the line 8--.S ofFig. Fig. 2) is a fragmentary view of the inner face of the rear wall ofthe tire box and ash pit or chamber.

Fig. 10 is a section on the line lO-lt) of Fig. 3 through one of theadjustable throat movable plate by which to modify the path Fig. 4 is 1of the line travel for the gases of combustion through the heater.

As shown in the drawings, the water heater is composed of two groups ofcast metal sections. one at one side and the other at the other side ofan intermediate tirev box It equipped with a fuel supporting grate 15,with an ash pit 1G therebelow. Each group comprises the intermediatesections 17, 1.7 and the front and rear end sections 18, 19,respectively. llach of said sections is cored out to provide therein awater space 20. and the water spaces of adjacent sections communicatewith ach other through connec ing nipples 21, 22 arranged at the bottomsand at the tops of the sections (Fig, ill. At their lower pa rts '23below the tire box and at their upper parts it above the tire box, as\Ycll as along their outer marginal parts 26, the secti ns 1T, 13 and 19are made of such thicknes as to lit closely together, as best shown inFigs. 4. (3, and 8, thereby leaving no spaces at these parts for thepassage of heated gases between {lie sections. The central parts of thesections abreast the tire box. and extending from the inner side thereofto the thickened portions or rims 26 are made thinner, as shown at 21'(Figs. 3, t, 5, T and 8) so as to form between the thinner portionslateral passages 28 for the heated gases that pass upwardly from thetire box. Said passages :28 conduct the heated gases to llues arrangedat the sides of the heater, as will hereinafter appear. Battle membersconsisting of lugs 29 or other obstructions cast on or otherwise carriedby the sections constitute means for breaking up the currents of heatedgases as they pass from the fire box to the fines.

he front and rear sections 18 and 19, respectively, of the heater areeach shown as made of two like parts, the lateral outer sides of whichfit the end ones of the intermediate sections. The lateral inner sides30 and 31, respectively, of the end sections are made thinner than theouter sides thereof and constitute the end walls of the fire box 14.They are joined at the center of th( front and rear walls in anysuitable manner, as for instance by the bolts 32, 33 which extendthrough lugs or flanges on the adjoining edges of said wall sections, asshown in Figs. 1 and 2. The ash pit front and rear walls 35, 36 are madeof thinner uncored plates and the triangular dead plates 37, 37 (Figs.3, 4 and 9) may be employed where the thinner ash pit walls extend abovethe lower sides of the grate to bring the same flush with the innerfaces of the fire box end walls. The said intermediate and end sectionsmay be attached together in assembled relation by means of the rods 34which are arranged at the upper and lower ends of the sections, saidrods ha ing the form of headed bolts which are screw-threaded andprovided with nuts to clamp the sections together. The fire box and ashpit are provided in their front Walls with the usual doors 38 and 39,respectively. The said intermediate sections 17 are formed above thefire box 14 and at their inner sides with overhanging portions 40 (Fig.3) between which the fuel is fed to the fire box 14 from a" magazine 41located above and supported in any suitable manner on the said sections,said magazine having at its front end one or more openings closed bydoors 42, 42 through which openings fuel is ied to the magazine. Each ofsaid sections 17, 18 and 19 is provided at its lower end, and generallybelow the level of the fire box, with two openings 4-3, 44 located oneiaterally outside the other, and said openings, when the sections areassembled and fixed together, constitute outer and inner fines "i5, 46through which the heated gases of combustion pass from the fire box 14on their Way to the exit fine of the heater. Said fines are separated bypartitions 47 which are also cored out to constitute a portion of thewater space of the heater. At. the front end of the heater the fiues 45,46 communi cute with each other through a transverse passage 48 (Fig.6). The rear ends of said inner fines 4C communicate directly with asmoke box 49 having an opening 50 by which to connect the exit pipethereto. The rear ends of the outer fines 45 are also adaptedtocommunicate directly with the smoke box, but said rear ends of thetiles 45 are normally closed by what may be termed direct draft dampers51, as most clearly shown in Fig. 6. At the from of the heater arearranged doors 52 which close openings through which access may be hadto the fine passages 45, 46 and asso .-iat d parts.

The lateral passages 28 formed between the thinner portions or fingers27 of the sections communicate at their outer sides with the outer fines4.3. s-othat the heated gases of combustion pass from the fire box,through the passages 28, directly to said outer fines. Normally, withthe direct draft damper 51 closed, as shown in full lines in Fig. 6, thepaths of fine travel are forwardly through the outer fines 45, throughthe connecting passages 48 and thence rear- Wardly through the innerfines 46, directly to the smoke box. In order to increase theeffectiveness of the draft, as when starting the fire or when operatingunder unusual conditions, the direct draft dampers 51 may be opened tothe dotted line position indicated in Figs. 6 and 7, whereupon theheatedgases of combustion will pass directly rearwardly through the outerfines 45 to the smoke box. The said direct draft dampers 51 may beoperated from the front of the furnace through the medium of endwisereciprocable actuating rods attached at their rear ends to crank arms 76connected with the dampers, said rods 75 extending at their forward endsthrough suitable guides 78 at the front of the heater, as shown in Figs.1, 2 and 8.

In order to adjust the path of fine travel of the heated gases ofcombustion to difierent conditions of 'Clf'lft, and also to fuels ofdifferent characters, the partitions 47 may be provided at differentparts in their lengths with narrow, longitudinally spaced verticalopenings 79, 79 adapted to be closed by removable members 80, 80. Eachof said closure members 80 consists of a narrow, elongated platearranged to cover one of the openings 79 between adjacent sections ofthe partition 47. The said removable plates 80 are shown as removablyfixed in place by means of lugs 83, (Figs. (3, 7 and 12) which extendlaterally therefrom near their tops and bottoms, and are provided attheir ends with notches 84, 84 to fit over ribs 85, 85 on the adjacentfaces of the partition sections at the partition openings '79. In orderto permit ready removal of the said plates the said ribs 85 may bediscontinued at 86 to form upper and lower open spaces or notches ofsutficient size that when the plates are raised to bring the lugs 83opposite the open spaces the plates may be laterally removed. Inreplacing the plates the lugs 83 are passed laterally through thenotches 86 until the notches 84 are in line with the ribs 85, whereuponwhen the plates are dropped the lugs drop below the notches 96 wherebythe said plates are relnovably locked in place. Vhen said removableplates are employed the adjustment of the path of fine travel willusually be effected by first removing the forwardinost one or more ofthe plates 80 so as to thereby afford communication from one flue to theother at points intermediate the ends of the fines and thereliy shortenthe path of tlue travel. One or more of said plates may he thus removedto vary the path of the flue travel to conform to different conditionsof draft, or to suit different kinds of fuel. In some instances all ofsaid plates may he thus removed. Thus it will be seen that the path offine travel is variable or adjustable within Wide ranges to adapt theheater to different conditions of draft aml fuel. Access to theremovable partition plates H0 may be readily had through the dooropenings of the front doors 52, 52 before referred to.

The furnace grate 15 shown comprises the. obliquely arranged rockingbars 53, 53 which incline downwardly and outwardly from a centraltubular ridge bar 5- to the heater sections and are mounted at theirlower and upper ends in sockets formed in the inner sides of the heatersections 17 and the said rigid bar 54. respectively. Said rocker barscarry grate fingers 55 i of any usual or preferred construction. Saidgrate bars may be rocked on their axes to shake the tire bed by means ofthe actuating bars 50, 56 arranged one at each side of the lower part ofthe tire box and extending from front to rear thereof above the gratebars. The said actuating bars are disposed in planes at right angles tothe planes of the rocking g'ate bars, and are provided on their outersides with transverse recesses 57 which receive the inturned ends 58 ofcrank arms 39 of the rocking grate bars. The arrangemciit is such thatendwise reciprocation of the actuating bars so transmits. through thearms 5!), a rocking motion to the grate bars. The said grate baractuating bars 36 have forward extensions (30 that extend through thefront wall 33 of the ash pit, and said eX- tensions are pivoted toactuating levers (32 which are in turn pivotally mounted on lu s 63attached in any suitable manner to antl projecting forwardly from thefront wall 35 of the ash pit. The said recesses .77 are made slightlywider than the dialiietcr ot' the inturned ends of the arms to s() as tothereby permit slight lost motion of said actuating bars relatively tosaid arms to stir the ashes. The inner faces of said at tuating bars maybe formed with a sciics f transverse ribs or flanges 65 which are ventthe ashes and clinkers accumulating atthe lower ends of the grate bars,and facilitating the discharge thereof through the grate to the ash pitbelow.

The upper inclined faces of the overhanging parts of the sectionsconstitute the tapered lower sides of'th-e magazine 41 which direct the.fuel to the feed throat of the magazine. In order to control the feed ofthe fuel from the magazine to the fire box I have provided at the feedthroat of the tire box movable throat pieces 90, 90 shown as located oneat each side of said throat and extending from front to rear of theheater. The said throat pieces are transversely elongated and are hollowso as to be water cooled. They are mounted at their ends, near theirupper sides, on pivots which are supported in the front and rear wallsof the tire box, whereby the lower sides of said throat pieces may beadjusted toward and away from each other to vary the ef fcctive feedopening of the throat. As best shown in Figs. 10 and 11, the throatpieces are pivotally mounted on nipples 92, D3 which extend,respectively, through the front and rear walls of the fire box, and aredesigned to be held at their lower sides in adjusted positionsrelatively to each other by other nipples ill. 95. each adapted toextend through one or the other of two or more laterally adjacentopenings in the tire box end walls. as indicated in Figs. 1, 2 and 3..\s shown in said figures, the throat pieces are adjusted with theirlower sides spread away from each other, so as to therc by enlarge thefeed throat of which said throatpieces constituti a part. The lowernipples therefore occupy the outer openings in the end walls. and theinner openings are closed by plugs 97. hen the throat pieces are to beadjusted to the dotted line position indicated in Fig. I} to contractthe throat opening, then the lower holding nipples at. 9.3 will extendthrough the iliner holes in the end walls. or those shown as cl sed byplugs. and the outer holes will be closed y said plugs. (lirculatitn ofwater is atlorded through the hollow throat pieces by the pipes at thefront end of the heater whi h connect the water space of the h 'atcrwith the uppcr front. or pivot. nipples, (Figs. 1. 1t) and ll) and thepipes Sit), 1)!) which connect the water space of the heater with therear holding nipples U5. U5 (Figs. 2 It) and ll). The pivot members 93and locking members 1H may. obviously. consist of solid plugs inst ad ofbeing nipples.

The throat pieces will usually be adjusted to the dotted line orcontracted position shown in Fig. I) when burning hard c al ofrelatively small size, and thereby retard too t'rcc feed of the coalfrom the magazine to the fire box below. The full line position of thethroat pieces shown in Fig. 3 is suitable in burning hard coal of largersize, or

when burning; soft coal.

opening is (.ilesirahle for the soft coal for the reason that coal ofthis chara ter in its preliminarv burn ng stages tends to e :pand and tocholte the throat opening. dotted lines o and indi at generally: the

The larg r throat fitting 10S (Figs. 4

The l contour of the upper sides of the coal heds i when the throatadjusted for wide and i more restricted openings, lcspia'tively.

An advan age f water cooling the throat pieces. in addition toprraenting them becoming orerhwited, is to prevent the swelling of thefuel at the threat when soft coal is used. which would occur if thethroat walls be highly heated, and whi h would result in an obstructionto the feed of the coal. A further advantage of such water cooling ofthe throat pieces is to prevent the ignition of the coal by heattransmitted thereto from the threat walls in the lower part of themagazine.

Another feature of construction which 1 preferably employ when burningsoft coal is means for directing a jet or s of heat ed air upon theupper surface of the coal bed as it is delivered into the tire box andat the zone where the volatile gases of the coal are distilled, and thusfacilitate the preliminary burning of the coal. The means herein shownfor thus effecting the discharge of air upon the coal bed as it firstenters the tire box are made as follows: 102, 102 designate angle platesor bars which lie behind and parallel to the throat pieces when thelatter occupy their outermost adjustment. Said angle plates extend fromend to end of the tire box, as shown in Fig. ll. Their inwardly directedflanges 10 rest on ledges at the outer upper sides of the throat pieces,and they are provided at the outersides of their upper edges with ribs10 i. which engage complen'iental grooves in the overhanging portions 40of the sections 17. The said angle plates may he slid into place, afterthe throat; pieces are adjusted outwardly through the openings closed bythe doors fltl. The lower mare of the plates 102 are held away from thelower sides of the throat pieces by the lon gitudinally spat-rd studs105. There is thus formed behind each adjustable throat pie e 90 and th*adjacent angle plate 102 an air passage 10o which extendslongz'itudinallv of the throat pieees. 'lhe vspacing: of the lowermargins of said plates from the throat pieces provides, exit openingsthrough which the air that passes into and is heated as it traverses thepas ages may he discharged from said passages upon the coal ju t afterthe coal has passed beneath the throat pieces into the tire boX. Air maybe supplied to the rear ends of the said hot air passa es 106 throughopenings 107. 107 in the rear wall of the tire box to which fresh airmay be directed by the branches of a Y-shapetl be further and 5) whichreceives air through the draft opening 103) at the rear end of thefurnaee. as indicated by the arrow in Fin. 5. Air supplied to suppo'tgemral combustion throug i said opening lt i and the passage t it) wiahleads to the ash pit below t e turnare. The supply of air to the freshair A y passage or fine 1.10 is con rolled i f a ijltta'fli alve 112which is arranged to control the opening; 109 and also to control achm-a t the it passage to the smoke boa. 49, a indicated in Fig. 5. Whenthe valve 112 is raised into a position to cut otl' the l): age of airto the ash pit through the p: e 110 cold air passes into the smoke boxto check the draft, and thus eheel; down the tire. The said cheek valve11:2, and a damper 1 lat ir the smoke box exit opening are shown asarranged to be simul taneously controlled by a controlling device whiehemistitutes the subject matter of an application for United StatesLetters Patent. ti ed hv nu; n the lllth day of May lull. Serial Number(3282632 and need not rein tleserihed.

\Vhr-n the throat pieces are adjusted to their innermost pusitionS, andthe hot air passages behind the same are not employed, the openings it)?may be closed by any suit-- able removable closure. 90 also the Y-shaped air supply titling will. he removed, and the opening 115. whichaffords corninunieation between the air supply passage 110 and saidfitting may be closed by the plate ilt'a shown in dotted lines in Fig.5. The rising; pipe 118 through which hot water or steam is delivered tothe heating system is branched, as shown in Figs. 1 and 2, its branches1.15), lit? entering the opposite sides of the steam, or water space atthe top thereof. The return pipe- 120 is likewise liu'anched, with itsbranches 191 leading to the opposite sides of the Water space at thebottom thereof. If desired, a perforated spray pipe 122 may be locatedin the ash pit just below the higher portion of the grate 13 andconnected, through the front wall, a shown in Fig. l, with a supply pipe12 whereby water may be sprayed on the ashes in the, ash pit preparatoiv' to removing the ashes. A valye 12] at the front of the heatercontrols the passage of Water to said spray pipe.

in the operation of the heater, coal or other fuel is directed from themagazine 41 to the tire box and is burned on the grate 1. air br ngsupplied to support combustion through the supply pa'sage 110 and thehot air passau' ltlti. if the latter be employed. The heated gases ofcombustion pass from the tire box or eonilmstion chamber laterally andin opposite directions through the passages to the tines 4J3, fromwhence, under normal operation. the heated'gases pass forwardly throughthe lines 45 to the forward ends of the fines 46 and thence to the smokebox 49. As before stated the path of the flue travel may be varied orcontrolled by removal of one or more of the partition plates 80, andalso by the opening of the direct draft damper 51.

The intercommunicating cored-out heater sections constitute a boiler,which, so far as certain features of the invention are concerned may bevaried in its construction. The construction shown, however, of thesectional boiler, constitutes a convenient, inexpensive and efficientarrangement which is preferred. Certain of other details described andshown are capable of Variation within the scope and spirit of theinvention.

I claim as my invention l. A water heater or the like comprising aboiler. a fire box, a single fuel magazine above the boiler,horizontally elongated throat pieces arranged at the bottom of themagazine and between the same and the fire box and constituting thesides of the throat of the magazine through which the fuel is deliveredfrom the magazine to the fire box and cooperating with each other toconstitute a single throat, means for adjusting the throat pieces towardand from each other and to hold them in adjusted relation, said throatpieces being vertically hollow for a substantial distance above theirlower edges, and means for water cooling the throat pieces.

2. A water heater or the like comprising a fire box, a boiler havingwater spaces arranged at the sides of the fire box, a single fuelmagazine above the boiler' and communicating with the latter through athroat arranged centrally beneath the magazine, horizontally elongated,hollow throat pieces cooperating with each other to constitute the sidesof the magazine throat, means for pivotally mounting said throat piecesat their upper sides to swing toward and from each other at their lowersides, means for holding the lower sides of said throat pieces at fixedadjusted distances apart, said throat pieces occupying nearer a verticalthan a horizontal plane in both positions of adjustment, and means forwater cooling said throat pieces.

3. A water heater or boiler comprising a fire box, a boiler having waterspaces arranged at the sides of the fire box, a fuel magazine above thefire box and communicating with the latter through a throat arrangedcentrally beneath the magazine, horizontally elongated, hollow throatpieces constituting the sides of the magazine throat, means forpivotally mounting said throat pieces at their upper sides to swingtoward and from each other at their lower sides, means for holding thelower sides of said throat pieces at fixed adjusted distances apart, andmeans affording communication between the hollow throat pieces and theWater space of the boiler.

4. A water heater or boiler comprising a fire box, a boiler, a singlecompartment fuel magazine above the fire box and communicating with thelatter through a throat arranged centrally beneath the magazine,horizontally elongated, hollow throat pieces constituting the sides ofthe magazine throat, pivot devices extending through the walls of thefirebox and pivotally supporting the throat pieces to swing toward andfrom each other at their lower sides, locking devices independent of thepivot devices extending through openings in the fire box walls to holdthe lower sides of the throat pieces at fixed adjusted distances apart,and pipe connections between certain of said pivot and locking devicesat opposite ends of the hollow throat pieces and the water space of theheater to afford circulation of water through the throat pieces.

A water heater or boiler comprising a tire box, a boiler having waterspaces arranged at the sides of the fire box, a. fuel magazine above thefire box and communicating with the latter through a throat,horizontally elongated, hollow throat piece-s constituting the sides ofthe magazine throat, pivot devices extending through the Walls of thefire box for pivotally supporting the throat pieces to swing toward andfrom each other at their lower sides, locking devices extending throughthe fire box walls to hold the lower sides of the throat pieces at fixedadjusted distances apart, and pipe connections between certain of saidpivot and locking devices at the opposite ends of the hollow throatpieces and the water space of the heater to afford circulation of waterthrough the throat pieces, the p pe connections at one end of the heaterwhich communicate with the lower sides of the throat pieces being oftelescopic construction.

6. A water heater or boiler comprising a tire box, a boiler, a fuelmagazine above the fire box, horizontally arranged throat pieces at thelower side of the magazine between which is formed a throat throughwhich fuel is delivered from the magazine to the fire box, and havingmeans for adjusting them toward and from each other, and removable meansadapted to cooperate with the outer sides of the throat pieces whenadjusted away from each other to receive air froni'the exterior of theheater and direct heated air upon the fuel bed at the lower sides ofsaid throat pieces.

7. A water heater or boiler comprising a fire box, a boiler, a fuelmagazine above the fire box, horizontally arranged throat pieces at thelower side of the magazine between which is formed a throat throughwhich fuel is delivered from the magazine to the them toward and fromeach other, and

fire box, and having means for adjusting members removably supported atthe outer sides of the throat pieces, between, hich and the throatpieces are formed passages that receive air from the exterio' of theheater, said members being separated at their lower sides from thethroat pieces to constitute narrow slits through which heated air isdischarged from said passages upon the fuel bed at the lower sides'ofsaid throat pieces.

8. A water heater or boiler comprising a tire box, a boiler, a, fuelmagazine above the tire box. horizontally arranged throat pieces at thelower side of the magazine between which formed a throat \tbrough whichfuel is delivered from the magazine to the fire box, and having me: usfor adjusting them toward and from each other, members removablysupported at the outer sides of the throat pieces, between which and thethroat pieces are formed passages that receive air from the exterior ofthe heater, said members being separated at their lower sides from thethroat pieces to constituteopenings through which heated air isdischarged from said passages upon the fuel bed at the lower sides ofsaid throat pieces, and means at said slits for breaking up the.currents of heated, air issuing through the slits upon the fuel bed.

9. A water heater or boiler comprising a boiler composed of lateralboiler sections arranged at the sides of an intermediate fire l box andprovided at their upper sides with inwardly extending overhangingportions between which fuel is fed to the tire box below, a fuelmagazine arranged above said overhanging portions and adjustable,elongated throat pieces depending from said overhanging portions of thegroup of sections, with means to adjust them toward and from each other,and between which is formed a throat through which fuel is fed from themagazine to the fire box below.

10. A water heater or boiler comprising a i boiler composed of laterallyseparated sections arranged at the sides of an intermediate fire box,each provided at their upper sides with inwardly extending overhangingportions between which fuel is fed to the fire box below, a fuelmagazine arranged above said overhanging portions and adjustable,elongated throat pieces at said overhanging portions ofthe group ofsections, with means to adju titheni toward and from each other. ,and:bet ween which is formed a throat through which fuel is fed from themagazine to the fire box below, and plates removably supported at theouter sides of the throat pieces. to form between the ,same and thethroat pieces air passages having means to receive air from the exteriorof the heater, said plates being separated at their lower margins fromthe throat pieces to provide openings through which heated air isdischarged from said passages to the fuel bed beneath the throat pieces.

11. In a water heater or boiler comprising a boiler composed oflaterally separated sections arranged at the sides of an intermediatefire box and provided at their upper sides with inwardly extendingoverhanging portions between which fuel is fed to the fire box below, afuel magazine arranged above said overhanging portions and adjustable,elongated throat pieces at said overhanging portions of the group ofsections, with means to adjust them toward and from each other, andbetween which is formi d a throat through which fuel is fed from themagazine to the tire box below, said throat pieces being hollow, andmeans to water cool said throat pieces.

In testimony that I claim the foregoing as my invention I affix mysignature in the presence of two witnesses, this 9th day of May, A. D.1911.

CHARLES F. NEWPORT.

\Vitnesses:

WILLIAM L. HALL, WILLIAM GOLDBERGER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

